Value chain analysis of the aquaculture feed sector in Egypt

This study was carried out to evaluate the value chain performance of the aquaculture feed sector in Egypt, in terms of value addition, employment and profitability. The strengths and weaknesses of each link of the value chain were assessed and appropriate upgrading, management and development strategies were suggested. Quantitative data were collected for each link in the value-chain through structured questionnaires that were drafted and distributed to the key players in the sector; 25 fish feed mills and 34 fish farms covering different geographical and production regions.

Training Manual on improved carp/carp-shing poly culture in pond and dyke cropping

Due to inadequate technical knowledge and training in advanced methods of gradually growing carp poly culture, framers are not getting expected yield. From the very beginning of the CSISA-BD project, WoldFish Center has taken initiative to introduce advanced methods in carp poly culture. To do this, the shortage of skilled trainers and training materials, has, particularly, been realized. Presently, a number of manuals on carp poly culture from Department of Fisheries, Bangladesh Fisheries Research Institute, WorldFish Center and different GOs and NGOs are available.

Rice-fish culture demonstration in Surin Province, Thailand

A brief account is given of project activities conducted regarding promotion of rice-cum-fish culture in Surin Province,Thailand as a means of increasing protein consumption and also income for rural people. The effect of stocking rate and stocking size on production was investigated. Three fish species were used: Cyprinus carpio, Puntius gonionotus and Oreochromis niloticus . It is believed that further research is warranted regarding rice-fish systems in which wild and cultured species can co-exist.

Response to selection for growth in an interspecific hybrid between Oreochromis mossambicus and O. niloticus in two distinct environments

The development of a saline tolerant tilapia strain able to grow fast is of importance in the Philippines, where 240 000 ha of brackish water ponds are available. To this end, founder hybridization between Oreochromis niloticus (with favorable growth traits) and O. mossambicus (with favorable salinity tolerance traits) was performed and followed by backcrossing with O. mossambicus to develop a strain highly tolerant to saline environments. Genetic selection for growth performance was subsequently conducted.

Progress and the future for tilapia farming and seed production in Bangladesh

Tilapia farming has great potential in Bangladesh. Tilapia promises to become a primary cultured species for freshwater and brackish water ecosystems, and therefore may also be a major source of employment. Bangladesh could become one of the leading Asian countries for tilapia seed production and grow-out farming. This article looks at the current status of Tilapia farming and seed production in Bangladesh.

Production economics of Nile Tilapia (Oreochromis niloticus) pond culture in El-Fayum Governorate, Egypt

Econometric techniques were used to estimate a production function for tilapia pond culture in El-Fayum Governorate, Egypt, utilizing cross-sectional field data. Explanatory variables were feed, initial stocking weight, and pond size. The function was used to examine returns to scale, estimate the productivity of feed and initial stocking weight, and estimate the profit maximizing demand equations for feed and fingerlings. Diminishing returns to scale seem to exist for tilapia pond culture.

Polyculture of tilapia with shrimp in China

Polyculture of tilapias (Oreo¬chromis niloticus and 0. mossambicus/O. niloticus hybrid) with shrimp (Penaeus orientalis) has been investigated several times in China since 1981. The results have caused much debate. Oppositionists held that finfish, especially tilapias, would rapidly consume the shrimp postlarvae and juveniles as happened when shrimp were put together with tilapias in a small tank. This article gave an overview of this practice in China.

Multivariate models of tilapia and carp growth as an application of microcomputers in aquaculture research

An examination is made of the applications of microcomputers to aquaculture research, considering in particular data storage and processing and also statistical analysis programmes. Reference is made to development projects with the aim of making use of modern, applied research methods to develop aquaculture technologies applicable for developing countries.

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